A conventional lender asks what you earn. A DSCR lender asks what the property earns. For an investor holding several properties, that difference is the whole reason the product exists.
Conventional underwriting counts every mortgage you carry against your debt to income ratio. Buy enough rentals and you become unfinanceable on paper, no matter how well the portfolio performs. DSCR lending sidesteps that entirely by underwriting each property on its own income.
The ratio
Debt service coverage ratio is net operating income divided by debt service.
In day to day use: monthly rent divided by the total monthly payment, where the payment includes principal, interest, taxes, insurance, and any HOA dues.
A property renting for $2,400 with an all in payment of $2,000 has a DSCR of 1.20. It produces 20% more income than it needs to service the debt.
- Below 1.0. The property does not cover itself. You are funding the shortfall monthly.
- 1.0 to 1.20. Thin. Financeable at many lenders, usually with a rate premium or reduced leverage.
- 1.20 to 1.40. The standard target. Prices normally.
- Above 1.40. Strong, and worth asking for better terms on.
What underwriting actually reads
Rent. The lower of the executed lease or the appraiser's market rent opinion. An above market lease to a friend does not raise the number. On a vacant property, market rent from the appraisal carries the file.
Taxes and insurance. Actual figures, not estimates. Watch for reassessment after a sale, which is a common way a projected 1.25 arrives as a 1.08. If the jurisdiction reassesses on transfer, underwrite the post sale bill.
HOA. Included in full.
Vacancy and management. Some lenders apply a haircut, others use gross rent. It is worth asking, because it moves the answer.
Your credit and reserves. Credit still prices the loan. Reserves are usually six months of payments, more on a vacant property.
Property condition. DSCR is a stabilised product. A property mid renovation does not qualify; it needs a bridge loan first, then a DSCR refinance once it is rented, which is exactly the shape of a BRRRR.
Fixing a file that misses
If the ratio comes in short, there are only four levers, and they are not equally useful.
Reduce the loan amount. Lower leverage lowers the payment and lifts the ratio directly. This is the most reliable fix and the most expensive in cash.
Extend amortisation. A 30 year schedule pays less monthly than a 20. Some lenders offer interest only, which raises DSCR meaningfully because there is no principal in the payment. Understand that you are improving a ratio without improving the property.
Raise the rent, legitimately. If the unit is genuinely under market and the lease is expiring, a renewal at market changes the file. This takes months, and it has to be real, because the appraiser's market rent will contradict a paper increase.
Appeal the assessment. Slow, but on an over assessed property it permanently improves the ratio and the returns underneath it.
What does not work is arguing the ratio. It is arithmetic on figures the lender verifies independently.
DSCR against a conventional loan
| DSCR | Conventional | |
|---|---|---|
| Qualifies on | Property income | Your personal income |
| Tax returns | Not required | Required |
| Properties financed | Effectively unlimited | Commonly capped near ten |
| Rate | Higher | Lower |
| Closing speed | Faster | Slower |
| Prepayment penalty | Common | Rare |
Conventional is cheaper when you qualify and are not near the property cap. DSCR costs more and removes the ceiling. Most investors use conventional early and move to DSCR once the portfolio makes them awkward on paper.
Watch the prepayment penalty. DSCR loans frequently carry a step down penalty over the first three to five years. If you expect to sell or refinance inside that window, price the exit before you sign into it.
Before you apply
Run the property through the DSCR calculator. It computes the ratio from rent, the loan, the rate, amortisation, taxes, insurance, and HOA, which is the same arithmetic underwriting performs, and it will tell you immediately whether the file clears 1.20 or needs a lever pulled first.
If it clears, send it over. Written terms inside 24 to 48 hours.